The Prados del Cervunal morainic complex: Evidence of a MIS 2 glaciation in the Iberian Central System synchronous to the global LGM

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dc.contributor.authorCarrasco, R.M.
dc.contributor.authorTuru, V.
dc.contributor.authorSoteres, R. L.
dc.contributor.authorFernández-Lozano, J.
dc.contributor.authorKarampaglidis, T.
dc.contributor.authorRodés, A.
dc.contributor.authorRos, X.
dc.contributor.authorDe Andrés De Pablo, Nuria
dc.contributor.authorGranja Bruña, José Luis
dc.contributor.authorMuñoz Martín, Alfonso
dc.contributor.authorLópez-Sáez, J.A.
dc.contributor.authorBraucher, R.
dc.contributor.authorDe Pedraza Gilsanz, Javier
dc.contributor.authorPalacios Estremera, David
dc.contributor.authorASTER Team
dc.date.accessioned2023-09-11T17:34:43Z
dc.date.available2023-09-11T17:34:43Z
dc.date.issued2023-07-23
dc.description.abstractThe area of Prados del Cervunal (PC) is an intra-morainic topographic depression located at 1800 m asl in the divide or interfluve between Garganta de Gredos and Garganta del Pinar valleys (Central Gredos; Iberian Central System, ICS). Both valleys, along with the adjacent Hoya Nevada, were occupied by glaciers during the Upper Pleistocene, leading to the development of the Prados del Cervunal moraine complexes studied in this work. Using cartographic methods and morphostratigraphic analysis, the three main glacial formations established in the Regional Chrono-Evolutionary Pattern for the ICS, Peripheral Deposits (PD), Principal Moraine (PM) and Internal Deposits (ID), have been identified and mapped in this area. The chronology of these formations has been implemented by Cosmic Ray Exposure (CRE) techniques using 10Be (new data) and 26Cl (previous data, recalculated in this work) in samples from morainic boulders. With these data, the following chrono-evolutionary sequence has been established: (stage 1) local-Maximum Ice Extent (MIE), dated in 25.0 ± 1.4 ka and corresponding to the maximum age obtained in these paleoglaciers; (stage 2) period of oscillations around the MIE, corresponding to the development of the PD Formation between ~25 ka and ~21 ka; (stage 3) period of readvance and stabilisation, dated after ~21 ka (average age obtained for the PD moraines attached to PM moraines) and previous to ~18 (minimum age obtained for a main crest of the PM formation); and (stage 4) onset of deglaciation dated around to ~18 ka (average of ages obtained for the first main crest of the ID formation). During the stages of maximum ice expansion, these three glaciers formed an Ice field whose tongues were interconnected on the PC flat by an ice transfluence system (stages 1 and 2, Plateau Glacier Period). In later stages, the ice masses were partitioned, giving rise to valley glaciers and large moraines forming morainic complexes like those of PC (stages 2, 3 and 4, Valley Glaciers Period). The local MIE and onset of deglaciation stages in this area show a good fit with the ages stablished to global level for the global Last Glacial Maximum (LGM) and the onset of the Last Glacial Termination (Termination I). They also show good correlation at local (with other areas of the ICS), peninsular (with other Iberian mountains) and continental (some areas of the Alps and mountains of Central Europe) level. Finally, this evolutionary sequence and its correlations allowed us to adjust and validate some units of the Regional Chrono-Evolutionary Pattern model and propose the Gredos-Pinar-Cabeza Nevada glacial system as benchmark for the glaciation of Marine Isotope Stage (MIS) 2 in the Iberian Peninsula.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.departmentDepto. de Geografía
dc.description.facultyFac. de Ciencias Geológicas
dc.description.facultyFac. de Geografía e Historia
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación
dc.description.sponsorshipUniversidad de Castilla - La Mancha
dc.description.sponsorshipANID FONDECYT
dc.description.sponsorshipANID BASAL CHIC
dc.description.statuspub
dc.identifier.citationCarrasco, R. M., Turu, V., Soteres, R. L., Fernández-Lozano, J., Karampaglidis, T., Rodés, Á., ... & ASTER Team. (2023). The Prados del Cervunal morainic complex: Evidence of a MIS 2 glaciation in the Iberian Central System synchronous to the global LGM. Quaternary Science Reviews, 312, 108169.
dc.identifier.doij.quascirev.2023.108169
dc.identifier.essn1873-457X
dc.identifier.issn0277-3791
dc.identifier.officialurlhttps://www.sciencedirect.com/science/article/pii/S0277379123002172?via%3Dihub
dc.identifier.relatedurlhttps://www.sciencedirect.com/journal/quaternary-science-reviews/vol/312/suppl/C
dc.identifier.urihttps://hdl.handle.net/20.500.14352/87703
dc.issue.number108169
dc.journal.titleQuaternary Science Reviews
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDPID2020-117685 GB-I00
dc.relation.projectID2023-GRIN-34112
dc.relation.projectID#3220537
dc.relation.projectID#FB210018
dc.relation.projectID#1220550
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu551.435.4(460)
dc.subject.keywordLast Glacial Cycle
dc.subject.keywordGlobal Last Glacial Maximum
dc.subject.keywordMarine Isotope Stage 2
dc.subject.keywordLast Deglaciation
dc.subject.keywordMorphostratigraphy
dc.subject.keywordCosmic Ray Exposure dating
dc.subject.keywordIberian Central System
dc.subject.ucmGeología
dc.subject.ucmGeodinámica
dc.subject.ucmGeofísica
dc.subject.unesco2506.09 Geología Glacial
dc.subject.unesco2506.07 Geomorfología
dc.titleThe Prados del Cervunal morainic complex: Evidence of a MIS 2 glaciation in the Iberian Central System synchronous to the global LGM
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number312
dspace.entity.typePublication
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